Article
Environmental Sciences
Zhenxiang Pan, Zhongqiang Li, Bizhen Zeng, Liguo Shen, Hongjun Lin
Summary: This study innovatively explored the use of an up-flow anaerobic sludge bed (USB) for the treatment of waste brine from ion exchange resin process, finding optimal operating conditions for efficient nitrate removal. The study achieved over 95% removal of nitrate and over 90% removal of total nitrogen from the waste brine.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Engineering, Chemical
Michael Edgar, Treavor H. Boyer
Summary: This study aimed to evaluate the impact of organic acids, natural organic matter (NOM), and buffer solutions on biological ion exchange (BIEX), and found that higher molecular weight and carbohydrate compositions in organic acids and NOM can enhance the separation of NO3- on ion exchange resins. Batch denitrification experiments further revealed that inorganic ions and organic compounds facilitate NO3- displacement from the resins and subsequent aqueous phase denitrification.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Jessica Younker, Lydia Zamlynny, Claire Spearns, Jennie Rand
Summary: The study evaluated the efficiency of cornstalk as a carbon feedstock for nitrate removal through bench-scale biological denitrification experiments, compared to acetate and ion exchange. Additionally, nitrate concentrations in a rural drinking water supply were monitored over a 16-month period, with varying levels in different wells and distribution system, highlighting the potential impact of nitrate treatment on lead corrosion.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Engineering, Environmental
Guan Wang, Yunqiang Yi, Lilin Huang, Jianle Wang, Zhanqiang Fang
Summary: Zeolites were used as fillers in a biological aerated filter (BAF) for simultaneous removal of norfloxacin, ammonium, and nitrate. Modified zeolites with HCl and HCl-CeCl3 demonstrated over 90% removal of norfloxacin within 240 minutes. The BAFs with modified zeolites also exhibited high removal efficiencies for COD, ammonium, and nitrate.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Agricultural Engineering
Shanshan Xu, Yunbao Yan, Chendong Shuang, Qing Zhou, Rong Ji, Aimin Li
Summary: In this study, different biological ion exchange systems and a biological activated carbon (BAC) system were established for wastewater treatment. The bio-MIEX system showed the shortest start-up period and highest ibuprofen removal efficiency. The superior performance of bio-MIEX was attributed to the presence of Fe3O4, which resulted in higher biological activity.
BIORESOURCE TECHNOLOGY
(2023)
Article
Environmental Sciences
Marcel Riegel, Brigitte Haist-Gulde, Frank Sacher
Summary: Laboratory and column tests were conducted to study the removal of short- and long-chain PFAS using activated carbon filtration and ion exchange treatment in a waterworks. Short-chain PFCA showed lower sorption affinity compared to long-chain PFAS or short-chain PFSA across all adsorbents. Short-chain PFCA could be effectively removed by activated carbon filtration over short run times, while longer PFCA required longer run times. Ion exchange media could also remove short-chain PFCA, but the run times were relatively short. However, the use of ion exchangers in single-use mode did not result in lower operating costs due to higher material costs.
ENVIRONMENTAL SCIENCES EUROPE
(2023)
Article
Engineering, Environmental
Hang Dong, Chloe Marie Laguna, Matthew J. Liu, Jinyu Guo, William A. Tarpeh
Summary: Ion exchange is a promising technology for selective nitrogen recovery from urine, but traditional methods require chemical-intensive regeneration. To overcome this issue, researchers have developed a novel electrified ion exchange stripping process that enables electrochemical in situ regeneration and ammonia stripping. The process has been proven to efficiently recover nitrogen and control electrolyte composition, improving energy efficiency.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Engineering, Environmental
Panpan Gao, Junkui Cui, Yang Deng
Summary: This study introduces a cyclic treatment approach for efficiently removing PFOA from water using ion exchange and heat activation of peroxodisulfate for resin regeneration and detoxification. The method shows linear increase in PFOA removal with cycle number, but caution is needed as excessive peroxodisulfate dosage may damage the resins.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
Karl Zimmermann, Jaycee Wright, Pierre Berube, Benoit Barbeau, Madjid Mohseni
Summary: This study confirms the effectiveness and feasibility of Biological Ion Exchange (BIEX) technology in removing dissolved organic carbon (DOC). Results show that BIEX technology can achieve DOC removal levels ranging from 32% to 50% when treating inlet water with low or high sulphate and DOC concentrations. Additionally, the study found that in the secondary ion exchange mechanism, the removed anions directly exchange in charge equivalence with the released anions.
Article
Engineering, Environmental
Julie A. Korak, Leah C. Flint, Miguel Arias-Paic
Summary: Ion exchange is a technology for removing hexavalent chromium from water, but waste brine disposal can be costly. Nanofiltration can be integrated to decrease waste brine volume and reuse the permeate in ion exchange regeneration. Impurities in waste brine are predicted to reach a steady state over multiple cycles, with vanadium and uranium showing increased regeneration efficiency with nanofiltration reuse brine. Further studies are needed to evaluate pilot-scale processes and potential impacts of implementing nanofiltration brine management.
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(2021)
Article
Engineering, Environmental
Yun Lee, Jin-Hyung Noh, Ji-Won Park, Seon-Won Yoon, Sang-Yeob Kim, Hee Jong Son, Woorim Lee, Sung Kyu Maeng
Summary: Ion exchange resins are commonly used to remove natural organic matter from drinking water, but disposing of the used brine can be problematic. This study explores the use of a hybrid biological ion exchange and activated carbon system for drinking water treatment, which proves to be the most effective method for removing natural organic matter and reducing the formation of disinfection byproducts.
Article
Biochemistry & Molecular Biology
Esra Altiok, Fatma Sen, Joanna Wolska, Piotr Cyganowski, Marek Bryjak, Nalan Kabay, Muserref Arda, Mithat Yuksel
Summary: This research investigated the removal of boron and arsenic from geothermal water using newly synthesized gel-like chelating resins. The results showed that the novel resins were able to reduce boron and arsenic concentrations in geothermal water below permissible levels for agricultural irrigation and drinking water. The optimal resin concentration for boron removal was determined to be 2 g/L, while for arsenic removal, a resin concentration of 8 g/L was needed for 94% removal using the novel resins compared to 32 g/L for commercially available resin. Column performance characteristics of the resins were also studied and compared to a commercially available resin.
Article
Engineering, Environmental
Mehran Aliaskari, Andrea Schaefer
Summary: This study investigated the impact of operational and water quality parameters on brackish water decontamination using a batch electrodialysis (ED) system. The results showed the significance of ionic characteristics in ED, with nitrate concentrations satisfying guideline threshold in all experiments. Lowest arsenic(V) concentration was 35 mu g/L at the highest electric potential, 25 V, demonstrating the potential of ED in environmentally friendly processes.
Article
Engineering, Environmental
Caroline M. Jankowski, Lauren A. Gustafson, Kristofer P. Isaacson, Katie R. Del Real, Yoorae Noh, Aliya B. Ehde, Madeline B. Larsen, Kyungyeon Ra, Maria A. Palmegiani, Catherine E. Fleming, William J. Schmidt, Amisha D. Shah, Caitlin R. Proctor, Andrew J. Whelton
Summary: The impact of new ion exchange point-of-entry residential softeners on water quality, as well as their ability to be decontaminated after hydrocarbon exposure, was studied. The release of total sulfur and total organic carbon into the drinking water during startup was significant. Softeners continued to cause high organic carbon levels even after one week of use. Leached materials from the resin contributed to chlorine decay and sorbed and desorbed contaminants. The study suggests that softeners exposed to hydrocarbon-contaminated water may require flushing or replacement.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Chemical
Dung Nguyen, Charles E. Schaefer
Summary: Rapidsmall-scale column tests (RSSCTs) are often usedto evaluate the efficacy of adsorption media for removing perfluoroalkyl acids (PFAAs) from impacted waters. In this study, bench-scale column experiments were conducted to determine the scaling relationship needed to design RSSCTs using Fluoro-Sorb (FS) and compare its effectiveness to granular activated carbon (GAC) and anion exchange resin (AER). The results showed that FS outperformed GAC and AER in removing long-chained PFAAs, but slight changes in chloride to sulfate mass ratio (CSMR) and high pH excursions were observed, emphasizing the importance of proper monitoring to avoid unwanted changes in water quality immediately after FS startup.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Engineering, Civil
C. Hostland, R. Sadiq, G. Lovegrove, D. Roberts
CANADIAN JOURNAL OF CIVIL ENGINEERING
(2015)
Article
Engineering, Chemical
Shelir Ebrahimi, Deborah J. Roberts
SEPARATION AND PURIFICATION TECHNOLOGY
(2015)
Article
Engineering, Environmental
Shelir Ebrahimi, Thi Hau Nguyen, Deborah J. Roberts
Article
Biochemistry & Molecular Biology
Courtney Dean, Yeyuan Xiao, Deborah J. Roberts
CANADIAN JOURNAL OF MICROBIOLOGY
(2016)
Article
Engineering, Chemical
Johanna Faccini, Shelir Ebrahimi, Deborah J. Roberts
SEPARATION AND PURIFICATION TECHNOLOGY
(2016)
Article
Engineering, Environmental
Shelir Ebrahimi, Deborah J. Roberts
Review
Agriculture, Multidisciplinary
Keith Duhaime, Deborah Roberts
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2018)
Article
Engineering, Biomedical
Sevda Mohammadi, Anupama Vijaya Nadaraja, Katherine Luckasavitch, Mandeep Chhajer Jain, Deborah June Roberts, Mohammad Hossein Zarifi
IEEE TRANSACTIONS ON BIOMEDICAL CIRCUITS AND SYSTEMS
(2020)
Article
Engineering, Electrical & Electronic
Mandeep Chajer Jain, Anupama Vijaya Nadaraja, Bianca Marjan Vizcaino, Deborah J. Roberts, Mohammad H. Zarifi
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS
(2020)
Article
Engineering, Electrical & Electronic
Sevda Mohammadi, Benjamin Wiltshire, Mandeep Chhajer Jain, Anupama Vijaya Nadaraja, Aaron Clements, Kevin Golovin, Deborah June Roberts, Thomas Johnson, Ian Foulds, Mohammad Hossein Zarifi
IEEE SENSORS JOURNAL
(2020)
Article
Biotechnology & Applied Microbiology
T. Liu, A. Nadaraja, J. Friesen, K. Gill, M. Lam, D. J. Roberts
Summary: The ideal ratio of phosphate buffer to COD for MFCs treating synthetic winery wastewater is 1 mmol l(-1) to 100 mg l(-1), which helps maintain a stable pH and steady performance of MFCs. The results highlight the narrow pH tolerance for MFCs treating winery wastewater and the significance of pH and buffer to COD ratio.
JOURNAL OF APPLIED MICROBIOLOGY
(2021)
Article
Engineering, Environmental
Tianglong Liu, Anupama Vijaya Nadaraja, Jiaming Shi, Deborah J. Roberts
Summary: This study evaluated the performance of microbial fuel cells (MFCs) under seasonal changes in feed, showing that different feeds can impact output and COD removal rates. The study also demonstrated a linear relationship between COD concentration and energy recovery, with dog food being identified as an effective alternative feed.
JOURNAL OF ENVIRONMENTAL ENGINEERING
(2021)
Article
Environmental Sciences
Hirra Zafar, Sadia Ishaq, Nicolas Peleato, Deborah Roberts
Summary: This study conducts a meta-analysis to examine the impact of design and operating factors on the performance of microbial fuel cells (MFCs). The results indicate that dual-chamber MFCs generally achieve higher COD removal and coulombic efficiencies compared to single-chamber MFCs. MFCs using a solid operating phase also show higher coulombic efficiencies than those using a liquid operating phase. Furthermore, brush anodes are found to have higher power density than flat surface anodes. The use of a platinum catalyst improves power density, while coulombic efficiency is more dependent on the presence of a membrane separator.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Microbiology
Victor G. Stepanov, Deborah J. Roberts, George E. Fox
GENOME ANNOUNCEMENTS
(2017)
Article
Victor G. Stepanov, Yeyuan Xiao, April J. Lopez, Deborah J. Roberts, George E. Fox
GENOME ANNOUNCEMENTS
(2016)
Article
Engineering, Environmental
Shun-Shun Chen, Xu-Xiu Chen, Tian-Yu Yang, Li Chen, Zheng Guo, Xing-Jiu Huang
Summary: A temperature-modulated sensing strategy was proposed to identify and determine BTEX compounds. Highly effective identification of BTEX was achieved using linear discrimination and convolutional neural network analyses. Additionally, quantitative analysis of concentration was accomplished by establishing the relationship between concentration and response.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Myungkyung Noh, Jeong Yeon Sim, Jisung Kim, Jee Hwan Ahn, Hye-Young Min, Jong-Uk Lee, Jong-Sook Park, Ji Yun Jeong, Jae Young Lee, Shin Yup Lee, Hyo-Jong Lee, Choon-Sik Park, Ho-Young Lee
Summary: This study reveals that chronic exposure to PM induces chronic inflammation and development of COPD by dysregulating NAD+ metabolism and subsequent SIRT1 deficiency in pulmonary macrophages. Activation of SIRT1 by resveratrol effectively mitigates PM-induced inflammation and COPD development. Targeting metabolic and epigenetic reprogramming in macrophages induced by PM is a promising strategy for COPD treatment.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Yu Liu, Linlin Qin, Yiming Qin, Tong Yang, Haoran Lu, Yulong Liu, Qiqi Zhang, Wenyan Liang
Summary: Co/NC/PAC electrode was prepared by compounding ZIF-67 with powder-activated carbon for the electrocatalytic treatment of nitrogen-containing heterocyclic compounds. The degradation efficiency of the four compounds reached 90.2-93.7% under optimal conditions, and the degradation order was pyridazine < pyrimidine < pyrazine < pyridine.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Julien Couturier, Pierre Tamba Oulare, Blanche Collin, Claire Lallemand, Isabelle Kieffer, Julien Longerey, Perrine Chaurand, Jerome Rose, Daniel Borschneck, Bernard Angeletti, Steven Criquet, Renaud Podor, Hamed Pourkhorsandi, Guilhem Arrachart, Clement Levard
Summary: This study analyzes the properties of bauxite residue samples and explores the influence of bauxite ore origin, storage conditions, and storage time. The results show that the speciation of yttrium is related to the origin of bauxite ore, while no significant variation was observed with storage conditions or aging of the residues.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Sakthinarenderan Saikumar, Ravi Mani, Mirunalini Ganesan, Inbakandan Dhinakarasamy, Thavamani Palanisami, Dharani Gopal
Summary: Microplastic contamination in marine ecosystems poses a growing concern due to its trophic transfer and negative effects on marine organisms. This study investigates the transfer and impacts of polystyrene microplastics in an estuarine food chain. The results show that microplastics can be transferred through the food chain, although the transfer rates are low. The exposed organisms exhibit stress responses, suggesting the potential risk of microplastics reaching humans through the food chain.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Review
Engineering, Environmental
Yan-Jiao Li, Ying Yuan, Wen-Bing Tan, Bei-Dou Xi, Hui Wang, Kun-Long Hui, Jia-Bao Chen, Yi-Fan Zhang, Lian-Feng Wang, Ren-Fei Li
Summary: This review investigated and analyzed the distribution, composition, and abundance of heavy metals and antibiotic resistance genes (ARGs) in landfill. The results showed that heavy metals have lasting effects on ARGs, and complexes of heavy metals and organic matter are common in landfill. This study provides a new basis to better understand the horizontal gene transfer (HGT) of ARGs in landfill.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Jessy Joseph, Ari Vaisanen, Ajay B. Patil, Manu Lahtinen
Summary: Efficient and environmentally friendly porous hybrid adsorbent beads have been developed for the removal of arsenic from drinking water. The structural tuning of the adsorbents has been shown to have a significant impact on their adsorption performance, with high crystallinity leading to increased adsorption capacity and selectivity towards As5+.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Yangyang Liu, Minhua Xiao, Kaiqin Huang, Juntao Cui, Hongli Liu, Yingxin Yu, Shengtao Ma, Xihong Liu, Meiqing Lin
Summary: This study measured the levels of phthalate metabolites in breast milk collected from mothers in southern China. The results showed that phthalates are still prevalent in the region, and breastfeeding contributes to phthalate intake in infants. However, the levels detected do not pose significant health risks to infants based on dietary exposure. The increasing exposure to certain phthalates calls for further research into their sources and potential risks.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Zhiqiang Wu, Jianxing Sun, Liting Xu, Hongbo Zhou, Haina Cheng, Zhu Chen, Yuguang Wang, Jichao Yang
Summary: Ocean depth affects microbial diversity, composition, and co-occurrence patterns of microplastic microbial communities. Deterministic processes dominate the assembly of mesopelagic plastisphere microbial communities, while stochastic processes shape the assembly of bathypelagic microbial communities. The relationships between microorganisms in the mesopelagic layer are more complex and stable, with Proteobacteria and Actinobacteriota playing important roles.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Tingting Xiao, Renjie Chen, Chen Cai, Shijie Yuan, Xiaohu Dai, Bin Dong, Zuxin Xu
Summary: Based on the efficiency of catalytic ozonation techniques in enhancing sludge dewaterability, this study investigated its effectiveness in simultaneous reduction of antibiotics and antibiotic resistance genes. The results showed that catalytic ozonation conditioning changed the distribution of antibiotics and achieved high degradation rates. It also significantly reduced the abundance of ARGs, inhibited horizontal gene transfer, and decreased the signal transduction of typical ARGs host bacteria.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Yang Deng, Xiaohong Guan
Summary: This article discusses two different development approaches for ferrate(VI) technology in water treatment, arguing that process integration is a promising method that can drive technological innovation and revolution in water treatment, achieving higher treatment efficiency, reduced costs and energy consumption, and a smaller physical footprint.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Zhe Zhang, Lu Zhang, Zhihao Huang, Yuxin Xu, Qingqing Zhao, Hongju Wang, Meiqing Shi, Xiangnan Li, Kai Jiang, Dapeng Wu
Summary: In this study, a floating catalytic foam was designed and prepared to enhance the mass transfer in immobilized photocatalysts for wastewater treatment. The floating catalytic foam could float on the water surface and establish a temperature gradient, effectively promoting the diffusion and adsorption of target molecules during the photocatalytic process.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Muhammad Nafees, Adiba Khan Sehrish, Sarah Owdah Alomrani, Linlin Qiu, Aasim Saeed, Shoaib Ahmad, Shafaqat Ali, Hongyan Guo
Summary: The accumulation of cadmium and antibiotics in edible plants and fertile soil is a worldwide problem. This study investigated the potential of zinc oxide nanoparticles to alleviate the toxicity of both cadmium and antibiotics and promote spinach growth.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Lurui Wan, Kai Wang, Yuan Chen, Zhiyong Xu, Wenbo Zhao
Summary: In this study, a low viscosity and high thermal stability SO2 absorbent with dual interacting sites was successfully synthesized. The absorbent showed the highest absorption enthalpy change and entropy change values among reported SO2 absorbents, and exhibited lower viscosity and comparable thermal stability to ILs.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Zhengwei Zhou, Guojie Ye, Yang Zong, Zhenyu Zhao, Deli Wu
Summary: This study utilized Mo powder and STPP to enhance the performance of the sodium percarbonate system in pollutant degradation. The presence of Mo and STPP resulted in a higher degradation rate of the model pollutant SMX, with low oxidant consumption. The system generated multiple active species through a series of chain reactions at different pH values, exhibiting excellent performance towards electron-rich pollutants. Furthermore, Mo demonstrated excellent stability and reusability.
JOURNAL OF HAZARDOUS MATERIALS
(2024)